Device for spreading oriented stockings

ABSTRACT

A device comprising a chamber having a dumping bottom, an inlet duct for feeding stockings and an outlet duct to draw off air from the chamber. An arrangement installed inside the chamber near the inlet duct is for catching the end of a stocking, said arrangement representing a strip which is disposed along the walls of the chamber and dividing the air flow into two streams. One of the streams presses the stocking delivered by the flow of the air being drawn off against a retaining baffle which is disposed across the chamber within the space confined by one of the chamber walls and the strip, while the other stream turns the stocking within the space confined by said strip and the other wall of the chamber. This device can be operated in cooperation with an automatic stocking producing machine or with a machine for sewing up the tip of a stocking.

United States Patent Tiranov et al.

DEVICE FOR SPREADING ORIENTED STOCKINGS Inventors: Gennady PetrovichTiranov, proezd Shokalskogo, 31, korpus 2, kv. 78; Georgy AlexandrovichKuligin, ulitsa Bolshaya Pochtovaya, 18/20, korpus 10, kv. 41; KarenJurievich Dzhermakian, ulitsa Taldomskaya, l5, kv. 27, all of Moscow,USSR.

Filed: Aug. 2, 1972 Appl. No.: 277,254

Foreign Application Priority Data Aug. 4, 1971 U.S.S.R 1689976 Feb. 21,1972 U.S.S.R 1745101 US. Cl. 302/2 R, 214/1 Q Int. Cl. B65g 47/24 Fieldof Search 198/33 R, 33 AA, 33 AC,

198/33 AD; 214/1 Q, 1 BE, 1 R; 302/2, 2 A

References Cited UNITED STATES PATENTS 2/1969 Sparso et a1. 302/2Primary Examiner-Frank E. Werner Attorney, Agent, or Firm-Holman & Stern[57] ABSTRACT A device comprising a chamber having a dumping bottom, aninlet duct for feeding stockings-and an outlet duct to draw off air fromthe chamber. An arrangcment installed inside the chamber near the inletduct is for catching the end of a stocking, said arrangementrepresenting a strip which is disposed along the walls of the chamberand dividing the air flow into two streams. One of the streams pressesthe stocking delivered by the flow of the air being drawn off against aretaining baffle which is disposed across the chamber within the spaceconfined by one of the chamber walls and the strip, while the otherstream turns the stocking within the space confined by said strip andthe other wall of the chamber.

This device can be operated in cooperation with an automatic stockingproducing machine or with a machine for sewing up the tip of a stocking.

11 Claims, 13 Drawing Figures DEVICE FOR SPREADING ORIENTED STOCKINGSThe present invention relates generally to the production of stockings,and more particularly to devices for spreading oriented stockings.

The stocking industry at present is noted for the ever growingpopularity of the containerized stocking production system whichrequires the incorporation of devices for spreading directed stockingsor the like products.

Devices for spreading oriented stockings are known in the art.Incorporated within these devices is a cham ber comprising an inlet andan outlet duct. Installed outside the chamber or at the inlet duct is aphotocell sending a signal to the actuating mechanism which cuts off theair flow and opens the bottom of the chamber.

The employment of photocells calls for a special electrical portion ofthe device, requiring skilled servicing personnel. Due to the fact thatthe photocellcontrolled light beam is crossed not by a solid body but bya stocking made of for example, capron with its loop structures allowingfor the passage of the light beam there through and insignificantlyvarying its intensity (brightness), this entails the following:

a. a photocell possessing a higher sensitivity;

b. an electrical-signal amplifier having a high amplification factor;

c. most important is that the glass pipe through which a stocking isflying be kept clean because even an insignificant variation in thetransparency will cause irregular functioning of the device as a whole.All the above explains the difficulties occurring when photocells areemployed either in devices for spreading stockings, or in those forcontrolling the length of stockings.

Another deficiency of the photocell-employing devices for spreadingstockings is associated with the fact that after shutting-off the airflow, the stocking is being moved in the directing chamber only becauseof the force of inertia and its motion is no longer controlled. To avoidthe extensive dispersion of the articles, provision must be made for anair flow having constantvelocity which is achieved by using a separateexhaust blower. This circumstance makes it impossible to connect suchdevices to a single common air system which for the purpose of reducingmicrowave noises in the production shop which has its blowers locatedbeyond the limits of the production room. Dispersion of the articles isalso observed in handling products which are different in weight(stockings of different size, different length, different yarn, tights),and makes it indispensable to readjust the devices when changing fromhandling one type of product to another.

Also at the present time devices are known in the art for spreadingoriented stockings comprising a chamber with a dumping bottom todischarge straightened articles, an inlet duct to feed the article andan outlet duct to draw-off the air. Installed inside the chamber closeto the inlet duct is a mechanical arrangement for gripping the end ofthe article, which arrangement is mounted on a retaining swivel flappositioned across the chamber and adapted to pass through the air beingdrawn-off. A safety flap is located at the outlet from the chamber toprevent ejection of an article into the outlet duct.

This device is simpler in design than the device employing thephotocell, reveals no extensive dispersion in spreading the directedarticles, and requires no spe cial skill from the attending personnel.However, the mechanical arrangement for gripping the end of a stockingis rather sophisticated and calls for programmed control.

This arrangement is made in the form of a mechanical clamp installed atthe inlet of the guiding chamber on the retaining swivel flap connectedto the programming mechanism. The mechanical clamp includes a fixed jawand a lever cooperating with two fixed stops fitted with a spring andadapted to occupy either of two fixed positions. The end of a stockingis clamped when the lever is tumbled by the spring from one fixedposition to the other and in so doing the lever strikes against thefixed jaw of the clamp. The support surface of the level being small,the mechanical impact on the yarn (especially on that of high count) candamage the latter thus reducing wear resistance of the stocking. Theretaining flap swivels to provide room for turning the stockingconcurrent with the running air flow which can draw the stocking intothe slot formed between the chamber wall and the retaining flap thuscausing damage to the stocking or the like.

Stockings possess varying crumpling properties depending on the yarnthey are made of, and with various types of automatic stocking machinerythey can be delivered to the guiding chamber either with their edge ortip forward, therefore provision is made in the device for a deflectinglever to guide the stocking to the gripping zone thus adding an extraadjustment point in the device. The adjustment is indispensable as thedeflecting lever can otherwise impede the normal approach of thestocking toward the clamp, or will not deflect the end of the stockingtoward the clamp. In order to put the mechanical clamp into action, itis necessary to start moving it away from the stocking to be grippedwhich, being forced by the air flow, can be brought to the slot formedwhen the retaining flap swivels and it is ejected into the chamber, orit can be gripped not by the end but by its middle portion adverselyaffecting the operation of the device. Besides, the. operating cycleperiod of the device with the mechanical clamp -is larger as compared tothat of the photocellemploying devices because of the followingoperating stages: gripping of the stocking by the clamp; swivelling ofthe flap; release of the stocking'from the clamp.

It is therefore an object of the present invention to eliminate theabove disadvantages.

The principal object of the present invention is to provide a device forspreading oriented stockings, wherein the arrangement for catching theend of a stocking is simple, reliable in operation and requires noprogrammed control for turning the stocking.

Another object of the invention is to provide a device for spreadingoriented stockings wherein the catching arrangement utilizes the airflow not only for turning the entire stocking but also for catching theend thereof.

Still another object of the invention is to provide a device forspreading oriented stockings wherein the arrangement for gripping theend of a stocking permits an increasing of the capacity of the deviceatthe expense of a reduction of the operating time cycle per singlestocking handled, without affecting the quality thereof.

With these and other objects in view, in a device for spreading orientedstockings, which comprises a chamber with a dumping bottom to dischargespread stockings, an inlet duct for feeding stockings, and an outletduct for drawing air thereof the chamber, an arrangement located insidethe chamber close to the inlet duct to catch the end of a stocking witha retaining baffle installed across the chamber and adapted to pass airbeing drawn off through said baffle, and a safety baffle installed atthe outlet of the chamber to prevent ejection of the stocking into theoutlet duct, the catching arrangement, according to the invention, ismade in the form of a strip installed along the walls of the chamber anddividing the flow of the air being drawn off into two streams, one ofsaid two streams pressing the end of the stocking against the retainingbaffle which is positioned between one wall of the chamber and saidstrip, and the other air stream for turning the stocking within thespace restricted by said strip and the other wall of the chamber,whereas the outlet opening of the inlet duct is so arranged in relationto the retaining baffle that the air flow being drawn off is directedalong the chamber wall toward which the retaining baffle is adjacent.

The embodiment of the baffle arrangement in the form of a strip dividingthe air flow into two streams re veals a very simple design, andpositioning of the retaining baffle being between one of the chamberwalls and said strip permits while feeding the stocking being drawn offby the air flow to partially cover the surface of the retaining bafflethus varying the ratio of the air streams passing around the strip atboth sides thereof. A partial vacuum is thus created behind theretaining baffle, which forcibly attracts the end of the stocking towardthe retaining baffle, i.e. the end of a stocking is gripped without anypossible damage to the stocking being handled.

Due to the fact that the strip is installed along the wall of thechamber and the retaining baffle seperating only a portion of thechamber, the other stream of the air flow passing between the strip andthe other wall of the chamber turns the stocking within this space andspreads it along the length of the chamber, thus making it unnecessaryto rotate the entire arrangement for turning the stocking.

The flow of air being drawn off and directed along the chamber wall towhich the retaining baffle is adjacent allows the stocking to beconstantly guided towards the retaining baffle irrespective of theweight of the stocking for more reliable batch processing thereof.

Also, the complete elimination of mechanical gripping, turning andreleasing of a stocking makes it possible to minimize the period ofspreading the stocking in the device which results in a substantialincrease in the production capacity of the device.

In accordance with one embodiment of the invention, the inlet duct ofthe device is installed at an angle with respect to the longitudinalaxis of the chamber, while the outlet duct is located near the chamberwall opposite of that to which the retaining baffle is adjacent. Withthis positioning of the inlet duct, the stocking, under its own momentumupon turning in the air flow, is directed toward the retaining flap.

The invention is further characterized in that the strip is so installedthat the chamber is sectionally divided into two unequal portions, thelesser portion accomodating the retaining baffle. This creates mostfavourable conditions for turning the entire stocking after its end iscaught and allows the turning air stream to be made more powerful inrelation to the catching air stream.

in accordance with one variant of positioning the strip, said strip isdisposed along the entire length of the chamber, thus dividing thechamber into two spaces.

With this positioning of the strip constant air rarefaction ismaintained in the space which accomodates the retaining baffle, and themoment when a stocking covers the retaining flap said arrangement makesthe catching of the end of the stocking more dependable.

In accordance with another variant of the positioning of the strip, thelatter is disposed in the intake portion of the chamber and is madealmost twice as long as the retaining baffle.

This arrangement of the strip provides most favourable conditions forutilizing the entire flow of the air being drawn through for attachingthe end of a stocking for subsequent turning and spreading the latteralong the chamber length without impairing the conditions of thestocking end being caught.

To prevent swirling of the air flow behind the retaining baffle, thelatter is, according to the invention, connected to the strip so thatthe ends of the strip are equally distant from the retaining baffle.

For a more reliable retention of a stocking onto the retaining bafflewhile turning the stocking by the air steam, the end surface of thestrip facing the air stream is, according to the invention, is fittedwith an insert made of a frictional material.

Another feature of the present invention is that the retaining baffle isoffset in relation to the axis of the inlet duct in the direction of theair flow, thus ensuring a more reliable contact for the stocking uponthe retaining baffle.

Another feature of the present invention is that the device is providedwith an ejector made in the form of a shaped rod encompassing the stripon the insert side and installed on the dumping bottom for a moreefficient discharge of a stocking after it has been spread along thechamber.

Yet another feature of the invention is that the end wall of the chambernear the inlet duct is inclined in relation to the axis of the latter inthe direction of the air flow, thus preventing the air flow fromswirling along the end wall of the chamber and providing the bestpossible conditions for directing a stocking toward the retainingbaffle.

Still another feature of the invention is that the crosssectional areaof the chamber in the zone of the retaining baffle is larger than thecrosssectional area of the chamber at the end portion thereof, whichenhances the reliability of the turning of a stocking.

Thus, the proposed device for spreading directed stockings is simple indesign, reliable in operation and is in high production capacity.

A fuller understanding of the invention may be had from the followingdescription of a presently preferred embodiments thereof with duereference to the accompanying drawings, wherein:

FIG. 1 is a general view, partly broken, of a device for spreadingdirected stockings according to the present invention;

FIG. 2 is a layout of for the kinematic and the pneumatic connections ofthe proposed device to the control mechanism of an automatic stockingmachine and its stocking delivery pipe;

FIG. 3 is a general view of another embodiment of the device accordingto the disclosure;

FIG. 4 shows the embodiment of the arrangement for catching the end ofthe stocking;

FIG. 5 shows one of the usages of the proposed device in cooperationwith a stocking tip sewing machine;

FIG. 6 a,b,c,d is the process diagram of the device, according to theinvention, shown in FIG. 3',

FIG. 7 a,b,c,d is the process diagram of the device according to theinvention, shown in FIG. 1.

The device for spreading directed stockings comprises a box-sectionedchamber 1 (FIG. I) having a dumping bottom 2, an inlet duct 3 forfeeding stockings to the chamber and an outlet duct 4 for drawing offair from the chamber 1, said duct being connected to the suction side ofa blower 5 (FIG. 2) via a pipe 6.

Positioned inside the chamber 1 close to the inlet duct 3 is anarrangement 7 (FIG. 1) for catching the end of the stocking, whichincorporates a retaining baffle 8. Located at the outlet of the chamber1 is a safety baffle 9 to prevent ejection of the stocking into theoutlet duct.

The baffles 8 and 9 can be made perforated, as shown in FIG. I, or of abent wire 10, as shown in FIGS.'3 and 4, or of a pipe, which isnecessary to pass the air being drawn off therethrough.

The outlet duct 4 (FIG. 1) accomodates a cut-off valve 11 which is usedto stop the flow of the air being drawn off from the chamber 1 upondischarging the stocking therefrom.

The dumping bottom 2 is connected to the chamber 1 by means of brackets12 installed on the chamber 1, with an axle 13 inserted in a hole (notshown) made in these brackets, and hinges 14 secured on the axle 13 andrigidly fixed to the bottom 2. The dumping bottom 2 is provided with acounterweight 15 for retaining the bottom in the initial position, i.e.,closing the chamber.

When using the device for spreading stockings in cooperation with anautomatic stocking machine, the valve 11 and the bottom 2 are turned bymeans of a cover 16 of a control drum 17 of the automatic stockingmachine through the means of corresponding pull rods 18 and I9, cables20 and 21 and levers 22 and 23.

In order to return it to the initial position, the cut-off valve 11 andthe dumping bottom 2 are loaded respectively by tension springs 24 and25. When the device is used in cooperation with an automatic stockingmachine, the inlet duct 3 of the chamber 1 is connected to a stockingdelivery pipe 26 of the machine.

In case the proposed device is installed on a table 27 (FIG. 5) of astocking tip sewing machine, the cut-off valve 12 is actuated by a turnpipe 29 mounted on an axle 28 through a pull rod 30, while the dumpingbottom is actuated by means of a pneumatic cylinder 31. The turn pipe 29is adapted for periodic coupling with the inlet duct 3 of the chamber 1and conveying therethrough a stocking from the sewing machine and can bealso utilized as a means for single or double turning out the stocking.

The arrangement 7 (FIG. I) for catching the end of a stocking representsa strip 32 installed vertically along walls 33 and 34 of the chamber 1so that the chamber is sectionally divided into two unequal portions 35and 36 (FIG. 6). The smaller portion 35 is formed by the wall 33 of thechamber and the strip 32 and accomodated the retaining baffle 8.

When air is being drawn off from the chamber, the strip 32 divides theair flow into two streams A and B, the stream A passing via the portion35, while the other stream B passes via the chamber portion 36 confinedby the strip 32 and the wall 34 of the chamber 1.

When a stocking is brought into the chamber at the moment of drawing offthe air from said chamber, one end of the stocking is carried by thestream A into the portion 35 wherein it is retained by the baffle 8,while the other air stream B turns the stocking within the space of thechamber portion 36 and spreads it lengthwise along the chamber 1.

In order to carry a stocking via the air stream A onto the retainingbaffle 8, the inlet duct 3 is positioned at an angle close to inrelation to the longitudinal axis 0-0 the chamber, whereas an outletopening 37 of the duct 3 is disposed opposite to the chamber wall 33 towhich the retaining baffle 8 is adjoined, thus the flow of the air beingdrawn off is directed along said latter wall to ensure reliableconveyance of the stocking to the baffle 8.

The strip 32 can be disposed along the entire length of the chamber todivide the latter into two equal spaces 38 and 39 (FIG. 7), the smallerportion 38 accomodating the retaining baffle 8 and when the latter iscovered by a stocking, partial vacuum is maintained in said space due towhich the stocking is held on the retaining baffle 8, while, within thespace 39, the entire stocking is carried and turned by the air stream Bpassing through said space, the latter accomodating the safety baffle 9and a valve 40 (FIG. 1) which is used to regulate the air flow throughthe space 39.

The strip 32 (FIG. 6) can be installed in the front portion of thechamber 1 as well and in this respect we have found that the stripshould be almost twice as long as the retaining baffle 8, and if thiscondition is ob served, almost all of the air flow drawn from thechamber 1, upon covering the retaining baffle 8 by a stocking, will passthrough the portion 36 of the chamber, resulting in the quick turning ofthe stocking therein and spreading of the latter lengthwise along thechamber.

The retaining baffle 8 is secured to the strip 32 in such a way that theends of the strip are equidistant from the retaining baffle 8, Le. theretaining baffle 8 and the strip 32 form a T in design, however thestrip and the baffle can be connected otherwise to form an L in design,but the experiments have revealed that the most favourable conditionsfor catching the end of a stocking and for turning the stocking in thespace are provided by a T-shaped arrangement of the baffle 8 and thestrip 32.

For a more reliable conveyance of a stocking to the retaining baffle 8,the latter is offset in relation to the axis O,--0 of the inlet duct inthe direction of the air flow, while an end wall 41 of the chamber 1 isinclined in relation to the axis 0 0, of the inlet duct 3 and also inthe direction of the air flow being drawn therethrough.

For a more reliable holding of a stocking on the baffle 8 while thestocking is turning and running about the strip 32, the end portion ofthe latter on the side facing the air flow 4 is fitted with an insert 42(FIG. 4) made of a friction bearing material such as rubber.

For a more reliable discharge of a stocking from the chamber upon havingbeen spread, the device is provided with a stocking ejector made in theform of a shaped rod 43 (FIG. 1) which is bent round the strip 32 on theside of the position the insert 42 and is rigidly fixed to the dumpingbottom 2.

The chamber 1 is narrower toward its end (FIGS. 3 and 6), and thereforethe cross-sectional area of the chamber in the zone of the position ofthe retaining baffle 8 is larger than the crosssectional area of thechamber at its end, thus ensuring a more reliable turning of a stockingwithin the space of the portion 36 of the chamber 1.

The device for spreading oriented stockings operates as follows.

A stocking 44 (FIG. 2) coming off the automatic stocking machine istaken by the air being drawn off by the blower 5 into the delivery pipe26 and the inlet duct 3 and at a high velocity is brought into thechamber 1. The inlet duct 3 is disposed at an angle close to 90 inrelation to the axis 0---() of the chamber, while the outlet opening 37(FIG. 6) of the duct is disposed opposite to the wall 33 to which theretaining baffle 8 is adjoined, therefore the induced air flow deflectedby the end wall 41 of the chamber is directed along the chamber, whereasthe stocking overcomes the deviating effort of the air flow under itsown momentum and runs with its tip or edge onto the retaining baffle 8,but as the automatic stocking machine produce stockings starting eitherfrom the tip, or the edge, the stockings are delivered into the chamberin one position, i.e., the stockings are already directed.

As the front part of the chamber 1 incorporates the strip 32, the latterdivides the air flow into two streams A and B and the stream B passesthrough the space 36 of the chamber, while the stream A passes throughthe retaining baffle 8 disposed in the space 35 of the chamber andpresses the end of the stocking to said baffle, thus partly covering thesurface thereof. This latter action changes the ratio of the air streamsA and B which results in the intensification of the stream B which, asis shown in FIG. 6a, starts turning the stocking 44 until it iscompletely spread out and positioned along the chamber 1 (FIG. 60).During this period, partial vacuum is maintained behind the retainingbaffle 8 and due to the effect thereof the end of the stocking is heldfast on the baffle 8. The insert 42 also aids in holding of the stockingreliably the baffle 8.

After the stocking 44 has been completely spread out, the cover 16 (FIG.2) of the control drum l7 first cooperates with the pull rod 18 and thenwith the pull rod 19 and through the medium of the cables 20 and 21 andthe levers 22 and 23 and firstly turns the cut-off valve 21 to close theoutlet duct 4 and discontinues the drawing off of the air from thechamber 1 and the inlet duct 3, then it opens the bottom 2.

The spread out stocking 44 drops into a container 45 (FIG. 6d) placedunder the chamber 1 and the shaped rod 13 (FIG. 1) being displaced atthe same time as the bottom 2 is opened and contributes to a quickrelease of the end of the stocking from the retaining baffle 8 andaccordingly assists in uniformly laying the stocking in the container45.

Catching, turning, spreading and dropping the stocking from the chamberare effected in a similar way when the chamber 1 is divided into twospaces 38 and 39, as shown in FIG. 7a,b,c,d, and in this case turningand spreading the stocking take place in the space 39.

Upon completion of the above, the dumping bottom 2 (FIG. 2) and thecut-off valve 11 are returned to the initial position by the springs 24and 25 respectively. Another stocking then comes off the automaticstocking machine and is delivered to the described device for spreading.

When the proposed device is operated in cooperation with a sewingmachine used for sewing up the tip. the inlet duct 3 is periodicallyconnected to the bent pipe 29 through which the stocking 44 with thesewn tip is conveyed to the chamber wherein catching, turning andspreading of the stocking are effected similarly to the procedures asdescribed above and as illustrated in FIGS. 6 a,b,c,d and 7 a,b,c,d.

What is claimed is:

1. A device for spreading oriented stockings comprising a chamber havingan end and side walls; a dumping bottom provided in said chamber todischarge the spreaded stockings therefrom; an inlet duct provided forthis chamber to deliver stockings thereinto through the outlet openingsof said duct; an outlet duct provided for the chamber for drawing offair from said chamber and the inlet duct; an arrangement for catchingthe end of a stocking positioned close to said inlet duct and made inthe form of a strip disposed along said walls of the chamber of saidstrip to divide the air flow being drawn off into two streams; aretaining baffle installed across said chamber near the inlet ductbetween said strip and one of the walls of said chamber and which isadapted to pass air therethrough and through which is passing one ofsaid streams of the air being drawn off, said stream pressing one end ofthe stocking against said baffle; another stream turning the stockinginside the space confined by said strip and the other side wall of saidchamber; a safety baffle installed at the outlet of said chamber toprevent ejection of the stocking into said outlet duct; said outletopening of the inlet duct is so disposed in relation to said retainingbaffle that the flow of the air being drawn through is directed alongthe wall to which the retaining baffle is adjoined; and a means fordrawing off air from said ducts and chamber.

2. A device as claimed in claim 1 wherein the inlet duct is positionedat an angle with respect to the longitudinal axis of the chamber, whilethe inlet opening of said duct is located opposite to the chamber wallwith respect to which the retaining baffle is adjoined.

3. A device as claimed in claim 2 wherein the retaining baffle is offsetin relation to the axis of the inlet duct and in the direction of theair flow.

4. A device as claimed in claim 2 wherein the end wall of the chamber atthe inlet duct is inclined in relation to the axis of said duct and ofthe direction of the air flow being drawn off.

5. A device as claimed in claim 1 wherein the strip is installed in sucha way that the chamber is sectionally divided into two unequal portions,the smaller portion incorporating the retaining baffle.

6. A device as claimed in claim 5 wherein the strip is disposed alongthe entire length of the chamber and divides the latter into two spaces.

7. A device as claimed in claim wherein the strip is installed in thefront portion of the chamber and is made almost twice as long as theretaining baffle.

8. A device as claimed in claim 7 wherein the retaining baffle and thestrip are so connected that the ends of the latter are equidistant fromthe retaining baffle 9. A device as claimed in claim 1 wherein the endportion of the strip facing the air flow is provided with an insert madeof a friction material zone of the safety baffle.

1. A device for spreading oriented stockings comprising a chamber havingan end and side walls; a dumping bottom provided in said chamber todischarge the spreaded stockings therefrom; an inlet duct provided forthis chamber to deliver stockings thereinto through the outlet openingsof said duct; an outlet duct provided for the chamber for drawing offair from said chamber and the inlet duct; an arrangement for catchingthe end of a stocking positioned close to said inlet duct and made inthe form of a strip disposed along said walls of the chamber of saidstrip to divide the air flow being drawn off into two streams; aretaining baffle installed across said chamber near the inlet ductbetween said strip and one of the walls of said chamber and which isadapted to pass air therethrough and through which is passing one ofsaid streams of the air being drawn off, said stream pressing one end ofthe stocking against said baffle; another stream turning the stockinginside the space confined by said strip and the other side wall of saidchamber; a safety baffle installed at the outlet of said chamber toprevent ejection of the stocking into said outlet duct; said outletopening of the inlet duct is so disposed in relation to said retainingbaffle that the flow of the air being drawn through is directed alongthe wall to which the retaining baffle is adjoined; and a means fordrawing off air from said ducts and chamber.
 2. A device as claimed inclaim 1 wherein the inlet duct is positioned at an angle with respect tothe longitudinal axis of the chamber, while the inlet opening of saidduct is located opposite to the chamber wall with respect to which theretaining baffle is adjoined.
 3. A device as claimed in claim 2 whereinthe retaining baffle is offset in relation to the axis of the inlet ductand in the direction of the air flow.
 4. A device as claimed in claim 2wherein the end wall of the chamber at the inlet duct is inclined inrelation to the axis of said duct and of the direction of the air flowbeing drawn off.
 5. A device as claimed in claim 1 wherein the strip isinstalled in such a way that the chamber is sectionally divided into twounequal portions, the smaller portion incorporating the retainingbaffle.
 6. A device as claimed in claim 5 wherein the strip is disposedalong the entire length of the chamber and divides the latter into twospaces.
 7. A device as claimed in claim 5 wherein the strip is installedin the front portion of the chamber and is made almost twice as long asthe retaining baffle.
 8. A device as claimed in claim 7 wherein theretaining baffle and the strip are so connected that the ends of thelatter are equidistant from the retaining baffle.
 9. A device as claimedin claim 1 wherein the end portion of the strip facing the air flow isprovided with an insert made of a friction material.
 10. A device asclaimed in claim 9 wherein provision is made for a stocking ejectorwhich is made in the form of a shaped rod encompassing the strip on theside of positioning the insert and is mounted on the dumping bottom. 11.A device as claimed in claim 1 wherein the cross-sectional area of thechamber in the zone of the retaining baffle is larger than thecross-sectional area in the zone of the safety baffle.